Waec Model Questions Vol1 2023 Agricultural Science Question 38
Practice objective / multiple choice question 38 from the 2023 Waec Model Questions Vol1 Agricultural Science examination.
In a 2‑ha maize field planted at 60 000 plants ha⁻¹, a scout finds an average of 3 stem‑borer larvae per plant. Each larva reduces grain yield by 0.15 kg per plant. An insecticide applied at the recommended rate (2.5 L ha⁻¹) costs ₦150 per litre and reduces the larval population by 80 %. After treatment, what is the total grain loss (in kg) expected from the remaining larvae?
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About This Question
This is Waec Model Questions Vol1 2023 Agricultural Science Question 38. It is one of the objective questions from the 2023 Waec Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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